Transmission shaft universal joint with good heat dissipation effect

Abstract

The transmission shaft universal joint with the good heat dissipation effect comprises two fork heads, the two fork heads are connected in a hinged mode, a plurality of first heat dissipation fins are fixedly connected to the two cambered surfaces of each fork head, and the first heat dissipation fins are evenly distributed and arranged along the surfaces of the fork heads at intervals. And the radian of the first radiating fins is consistent with the angle of the cambered surface of the fork head. The utility model relates to the technical field of universal joints. According to the transmission shaft universal joint with the good heat dissipation effect, the contact face of the fork head and air is increased through the multiple first heat dissipation fins and the first heat dissipation through openings, then the heat exchange rate of the fork head can be increased in the fork head rotating process, heat dissipation can be enhanced at the joint through cooperation with the multiple second heat dissipation through openings, heat fatigue and oxidation of the universal joint are relieved, and the service life of the universal joint is prolonged. The service life of the universal joint is prolonged, overheat expansion of the universal joint is avoided, torque fluctuation is reduced, vehicle controllability is improved, and the universal joint is more stable and safer in the using process.

Description

Technical Field

[0001] This utility model relates to the field of universal joint technology, specifically to a drive shaft universal joint with good heat dissipation. Background Technology

[0002] The core function of a universal joint is to connect the drive shaft and the transmission shaft, enabling the transmission of power between non-collinear shafts. Its technical principle is based on spatial kinematics, and its special structural design allows for an angle between the shafts. Drive shaft universal joints are widely used in automobiles, construction machinery, agricultural machinery, and other fields.

[0003] Chinese patent CN204572836U discloses a universal joint drive shaft. This technical solution, by replacing the original flexible drive shaft with a combination of intermediate shaft and end shaft, can effectively improve the stability and service life of use. Compared with the flexible drive shaft, it greatly reduces the manufacturing and testing costs. At the same time, it has low maintenance costs, stronger power coefficient, no oil leakage, good fuel economy, and less noise than the vehicle chain. It is safer to use, has strong applicability, and good practicality.

[0004] However, during use, the universal joint of this drive shaft does not have a heat dissipation structure on its surface. It relies solely on the surface of the universal joint to contact the air for heat dissipation, which results in poor heat dissipation. The universal joint is prone to thermal expansion at high temperatures, which leads to a decrease in strength and hardness, making it prone to breakage and failure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a drive shaft universal joint with good heat dissipation, solving the problem that drive shaft universal joints lack heat dissipation structures on their surfaces and rely solely on the surface of the universal joint in contact with the air for heat dissipation, resulting in poor heat dissipation.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a universal joint for transmission shaft with good heat dissipation, comprising two forks, which are hinged together. Each of the two arc surfaces of the forks is fixedly connected with a plurality of first heat dissipation fins. The plurality of first heat dissipation fins are evenly spaced along the surface of the forks, and the curvature of the first heat dissipation fins is consistent with the arc angle of the fork surface.

[0007] The fork head has several first heat dissipation vents on both sides, and the multiple first heat dissipation vents are evenly spaced along the side wall of the fork head. A connecting cylinder is fixedly connected to the surface of the fork head, and the surface of the connecting cylinder has several second heat dissipation vents.

[0008] Furthermore, a keyway is provided on the inner wall surface of the connecting cylinder.

[0009] Further, the plurality of second heat dissipation openings are arranged in a ring shape and uniformly distributed along the surface of the connecting cylinder.

[0010] Further, a connecting block is arranged between the two prongs, and the side wall of the connecting block is fixedly connected with two connecting shafts, and the ends of the two connecting shafts are respectively fixedly connected with the inner wall of one prong.

[0011] Further, the surface of the prong, the first heat dissipation fin and the connecting cylinder are coated with a radiation heat dissipation coating.

[0012] Further, a reinforcing rib is fixedly connected between the inner end of the connecting cylinder and the side wall of the prong.

[0013] Compared with the prior art, the beneficial effects of the utility model are that the contact surface of the prong and air is increased by the plurality of first heat dissipation fins and first heat dissipation openings, so that the heat exchange rate of the prong is improved during the rotation of the prong, and in cooperation with the plurality of second heat dissipation openings, heat dissipation is strengthened at the connecting part, the thermal fatigue and oxidation of the universal joint are slowed down, the service life of the universal joint is prolonged, the overheat expansion of the universal joint is avoided, the torque fluctuation is reduced, the vehicle controllability is improved, and the use process is more stable and safe, which is beneficial to use in the automobile transmission system. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Fig. 2 It is a front structure schematic view of the utility model;

[0016] Fig. 3 It is a structure schematic view of the prong and the radiation heat dissipation coating in the utility model.

[0017] In the drawing: 1, prong; 2, connecting block; 3, first heat dissipation fin; 4, connecting cylinder; 5, keyway; 6, first heat dissipation opening; 7, second heat dissipation fin; 8, radiation heat dissipation coating; 9, second heat dissipation opening; 10, connecting shaft; 11, through hole; 12, limiting block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0019] Please refer to Figs. 1-3The utility model provides a technical scheme: a transmission shaft universal joint with good heat dissipation effect, comprising two prongs 1, the two prongs 1 are hingedly connected, a plurality of first heat dissipation fins 3 are fixedly connected to the two curved surfaces of the prong 1, the plurality of first heat dissipation fins 3 are evenly and spacedly arranged along the surface of the prong 1, and the curvature of the first heat dissipation fin 3 is consistent with the curved surface angle of the prong 1.

[0020] A plurality of first heat dissipation openings 6 are formed in the two side surfaces of the prong 1, the plurality of first heat dissipation openings 6 are evenly and spacedly arranged along the side wall of the prong 1, a connecting cylinder 4 is fixedly connected to the surface of the prong 1, and a plurality of second heat dissipation openings 9 are formed in the surface of the connecting cylinder 4.

[0021] The plurality of first heat dissipation fins 3 and the first heat dissipation openings 6 increase the contact area between the prong 1 and air, thereby improving the heat exchange rate of the prong 1 during rotation of the prong 1, and in cooperation with the plurality of second heat dissipation openings 9, heat dissipation is strengthened at the connecting portion, thermal fatigue and oxidation of the universal joint are reduced, and the service life of the universal joint is prolonged.

[0022] The universal joint is prevented from overheating and expanding, torque fluctuation is reduced, vehicle controllability is improved, and the universal joint is more stable and safe during use, so that the universal joint is suitable for use in an automobile transmission system.

[0023] A plurality of second heat dissipation fins 7 are fixedly connected to the inner wall surface of the first heat dissipation opening 6, the plurality of second heat dissipation fins 7 are evenly and spacedly arranged in a ring shape along the inner wall surface of the first heat dissipation opening 6, and the second heat dissipation fins 7 increase the contact area between the first heat dissipation opening 6 and air.

[0024] A key groove 5 is formed in the inner wall surface of the connecting cylinder 4, and the key groove 5 facilitates connection and fixation of the transmission shaft and the connecting cylinder 4.

[0025] The plurality of second heat dissipation openings 9 are evenly and spacedly arranged in a ring shape along the surface of the connecting cylinder 4, and the second heat dissipation openings 9 improve heat dissipation uniformity.

[0026] A connecting block 2 is arranged between the two prongs 1, two connecting shafts 10 are fixedly connected to the side wall of the connecting block 2, and the ends of the two connecting shafts 10 are fixedly connected to the inner wall surface of one prong 1.

[0027] A through hole 11 adapted to the connecting shaft 10 is formed in the surface of the prong 1, the other end of the connecting shaft 10 penetrates the inside of the through hole 11, and a limiting block 12 is arranged.

[0028] The surface of the prong 1, the first heat dissipation fin 3 and the connecting cylinder 4 is coated with a radiation heat dissipation coating 8, the radiation heat dissipation coating 8 quickly dissipates heat generated during operation of the universal joint by radiation, and reduces the surface temperature.

[0029] The inner end of the connecting cylinder 4 is fixedly connected with the side wall of the fork head 1, and a reinforcing rib is arranged between the inner end of the connecting cylinder 4 and the side wall of the fork head 1, so as to improve the connecting strength between the connecting cylinder 4 and the fork head 1.

[0030] In operation, the plurality of first heat dissipation fins 3 and the first heat dissipation openings 6 increase the contact surface of the fork head 1 with air, thereby improving the heat exchange rate of the fork head 1 during rotation of the fork head 1, and cooperating with the plurality of second heat dissipation openings 9, heat dissipation is strengthened at the connecting portion, thermal fatigue and oxidation of the universal joint are slowed down, the service life of the universal joint is prolonged, overheating expansion of the universal joint is avoided, torque fluctuation is reduced, vehicle handling is improved, and the vehicle is more stable and safe during use, which is beneficial to use in the automobile transmission system.

[0031] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A universal joint of a transmission shaft with good heat dissipation effect, comprising two yokes (1), characterized in that: Two said prongs (1) between the hinge connection, both arc surface of the prongs (1) are fixedly connected with a plurality of first heat dissipation fins (3), a plurality of said first heat dissipation fins (3) are evenly spaced along the surface of the prongs (1) distribution arrangement, the curvature of the first heat dissipation fin (3) is consistent with the angle of the arc surface of the prongs (1); The two sides of the prongs (1) are provided with a plurality of first heat dissipation openings (6), a plurality of said first heat dissipation openings (6) are evenly spaced along the side wall of the prongs (1) distribution arrangement, the surface of the prongs (1) is fixedly connected with a connecting cylinder (4), the surface of the connecting cylinder (4) is provided with a plurality of second heat dissipation openings (9).

2. The universal joint of claim 1, wherein: The inner wall of the connecting cylinder (4) is provided with a key groove (5).

3. The universal joint of claim 1, wherein: A plurality of said second heat dissipation openings (9) are evenly distributed along the surface of the connecting cylinder (4) annular arrangement.

4. The universal joint of claim 1, wherein: Two said prongs (1) between the setting of the connecting block (2), the side wall of the connecting block (2) is fixedly connected with two connecting shafts (10), two said connecting shafts (10) end part is respectively connected with the inner wall of one said prongs (1).

5. The universal joint of claim 1, wherein: The surface of the prongs (1), the first heat dissipation fin (3) and the connecting cylinder (4) are coated with a radiation heat dissipation coating (8).

6. The universal joint of claim 1, wherein: The inner end of the connecting cylinder (4) and the side wall of the prongs (1) are fixedly connected with a reinforcing rib. The inner end of the connecting cylinder (4) and the side wall of the prongs (1) are fixedly connected with a reinforcing rib.

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